Introduction: Jeff-A Cheap and Simple Ic Robot

Picture of Jeff-A Cheap and Simple Ic Robot

Jeff took 5 weeks to compete and is a simple IC robot. Jeff's main thing is the led headlights witch come on automatically when it is dark. It works by having what is called a current see sore witch when the current is higher on the Ldrs side compare to the Variable resistors side it puts power to chip (Ua741) then puts power to the transistor (BC109)  then to the Leds. Jeff is simple to make but fiddle as you can see he is made from a sandwitch tub,If you what instructions please leave a comment below. 


btf723 (author)2016-01-30

i would love a step-by-step for Jeff please.

Marvin2843 (author)2015-10-01

Would be interest to build this with Scouts as part of the Robotics Badge

Anmol Saxena (author)2015-02-13

It would be great if u could send me the schematic diagram as

gaston.lemos.98 (author)2014-12-04


Saiyam (author)2014-11-15

can you please send me the circuit diagram??

kmargie25 (author)2014-11-04

Cool! I want to build it and it would be awesome if there were instructions.

miguel.torrecarrasco (author)2014-10-21

please! You can send me step by step how to make jeff with BOM instructions.

robobot3112 (author)2014-08-17

certainly i need instructions. Which IC to use?

The microchip is UA741

Can u please give me the instructions

rdrumond (author)2014-08-04

can i you send me a message with the circuit and other things ? thankyou

British Badger (author)rdrumond2014-08-05

okay I'll sent the circuit diagram
and pcb

Kiteman (author)2013-11-17

We absolutely need a step-by-step instructable for Jeff!

British Badger (author)Kiteman2014-07-12

I am starting a news letter about what I'm doing if you want to receive it please reply

P.S I have released a step by step for jeff

Kiteman (author)British Badger2014-07-12

I'm replying

British Badger (author)Kiteman2014-07-16


I'll send it right to you
Do you still want a step by step for Jeff

Kiteman (author)British Badger2014-07-16

I think we all do!

(How are you sending the newsletter? By PM?)

British Badger (author)Kiteman2014-07-16

Out of ingested what is PM?

And at the moment I'm sending them just as a private message
I think I sent you

Kiteman (author)British Badger2014-07-16

Yes, PM is Private Message. I saw the newsletter, I just haven't had to read it yet.

British Badger (author)Kiteman2014-07-16


hope you enjoy it
Please tell me your thought
about the next Jeff

British Badger (author)Kiteman2014-07-16

feel free to comment on the news I like to hear what other think of my plans

British Badger (author)2014-07-16

I am starting a news letter leave a comment if you want to reiceeve it

Haripprasath (author)2013-12-27

plese send me the full contents with circuit diagrams.

Okay, I am working on it ill send it to you when I am done

botgames (author)2013-12-18

I would love to make Jeff. You should make an instructable with more step by step instructions.

eolivas (author)2013-11-19

I agree I would like an instructable

bhunsaker (author)2013-11-17

love the idea

About This Instructable




Bio: failure keeps you going. that's what some people say, I say custard creams keep you going. woundnt get though a project with out them
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